Airmen with 45th Space Wing shows Acting Secretary of the Air Force Matthew Donovan a United Launch Alliance’s Delta IV rocket on Space Launch Complex-37 July 19, 2019, at Cape Canaveral Air Force Station, Fla. Donovan visited the 45th SW at Patrick Air Force Base, Fla., to become more familiar with space launch operations and to celebrate the 50th anniversary of NASA’s Apollo 11 mission. (U.S. Air Force photo by Jared Trimarchi)